(19)

(11)

EP 0 037 423 A1

(12)

(43) Date of publication: 14.10.1981 Bulletin 1981/41 (21) Application number: 80902205.0 (22) Date of filing: 29.09.1980

(51) International Patent Classification (IPC):  G02B 27/ 02( . ) G03B 23/ 14( . ) (86) International application number: PCT/US1980/001297 (87) International publication number: WO 1981/000918 (02.04.1981 Gazette 1981/08)

(84) Designated Contracting States: DE FR GB SE (30) Priority: 28.09.1979 US 19790079797 (71) Applicant: LAMB, Owen L. Scotts Valley, CA 95066 (US)	(72) Inventor: LAMB, Owen L. Scotts Valley, CA 95066 (US) (74) Representative: Zenz, Joachim Klaus, Dipl.-Ing., et al  Am Ruhrstein 1 D-45133 Essen D-45133 Essen (DE)